One prompt. Up to ten models. Your call.
Compare answers from OpenAI, Anthropic, Google, Meta, Mistral, xAI, Perplexity, Amazon, and Backplain — simultaneously, in a single workspace, with the AI Firewall in front of every one of them.
The Tokyo Test, productized.
Type one prompt. Select up to ten models. Responses stream side by side in real time. When two answers disagree on a clause, a dosage, or a number, the disagreement itself is the most useful signal — it tells you which questions deserve a second read and which ones do not.
Pick the answer that holds up. Continue with that model. The others were the research.
Up to 10 models per prompt
Toggle any combination of the 47 connected models. Comparison view, chat view, or single-model focus — the workspace adapts to the workflow.
Model Groups
Admins create named bundles — Legal Models, Research Models, Coding Models — and assign them to teams. Different roles see different sets by default.
Files, RAG, and vision
Upload PDF, DOCX, XLSX, or images. Ask all ten models the same question about the same document. Vision-capable models see the image; text models read the OCR.
Saved prompts & system prompts
Reusable prompt templates and per-Model-Group system prompts. Lock the wording your compliance team approved; let users vary the inputs.
Threaded sessions
Continue a conversation with one model after a comparison. Branch a thread to send a follow-up to a different model. Every branch is logged.
Citations & source surfacing
When a model returns sourced output, citations are pulled forward in the UI. When it doesn't, the absence is also surfaced — so users can see what was inferred.
47 models across 9 providers.
| Provider | Representative models |
|---|---|
| OpenAI | GPT-5.5, GPT-4.1, GPT-4o, o3, o3-mini |
| Anthropic | Claude Sonnet 4.5, Claude Opus 4, Claude Haiku 3.5 |
| Gemini 2.5 Pro, Gemini 2.5 Flash, Gemini 2.0 | |
| Meta | Llama 4 Maverick, Llama 4 Scout, Llama 3.3 |
| Mistral | Mistral Large 2, Codestral, Pixtral |
| xAI | Grok 3, Grok 3 mini |
| Perplexity | Sonar Pro, Sonar Reasoning |
| Amazon | Nova Pro, Nova Lite |
| Backplain | Open-weight models hosted on our own infrastructure |
Provider mix updated continuously. New frontier models are added within days of release; deprecated models are retired with notice. Admin console shows current lineup.
Multi-Model Chat is not a list of API connectors. Every prompt — regardless of which model it is going to — passes through the AI Firewall first. PII, PHI, PCI, software credentials, and any custom term your admin defined are intercepted before any external model sees them.
That is the meaningful difference between Backplain and a model aggregator. The aggregator gives you ten models. Backplain gives you ten models and the boundary between them and your data. See the AI Firewall →
Run your first multi-model prompt today.
14-day trial. No credit card. Three minutes to your first comparison.